Improvement in door checks



n. GUNDELFING'ER.

Donr-Check. -161,505. Patented March30,l875.

WITNESSES mums.

THE GRAPHIC COPHOTO -LITH.39 8v?! PARK PLACE,N.K

L'NI'IED STATES IMPROVEMENT IN DOOR CHECKS.

Specification forming part of Letters Patent No. 161,505, dated March30, 1875; application filed January 16, 1875.

To all whom it may concern:

Be it known that I, DANIEL GUNDELFIN- GER, of Jefferson City, in thecounty of Cole and State of Missouri, have invented a new and ImprovedDoor-Check; and I do hereby declare that the following is a full, clear,and exact description of the same, reference being had to theaccompanying drawing, forming a part of this specification, in which-Figure 1 is a side elevation partly broken out. Fig. 2 is a section ofthe catch through line a m of Fig. 1. Fig. 3 is plan view of stop E.Fig. 4, bottom view of catch.

The invention relates to certain improvements in the door-check patentedto me, (No. 155,942,) October 13, 1874, for preventing the knobs ofdoors from striking the wall-paper, which consists in a spring-armthrown out from a box on the door, and locked in a catch projecting froma case in the wall. The present invention consists in certainimprovements therein, as hereinafter fully described, and then pointedout in the claims.

A represents the box, which is attached to the door, and contains thespring-lever B, held by a spring cross-pin, b, while 0 represents thecase on the wall in which is located the spring-catch D. The latter is,in my former patent, a spring-lever, while I now employ the quadrangularslide-bar cl, having shank (1 On the outside, and in a recess CASE B.

near thumb-piece d of shank d, is a spiral spring, d while a groove, 0,and cross-bar c of case 0, serve to guide the slide in its movement.This makes a stronger and better catch, while it is much less liable toget out of order. I find by experience that after the box A has beenfastened on a door, and a case, 0, on the wall, so that the arm willexactly lock, the door contracts or sags somewhat, so as to prevent theend of arm from entering the hole of case 0. I have, therefore, placedan adjustable stop, E, over the short arm of lever B, and slotted it at6, so that it may slide on the clamp-screw F and hold the lever at agreater or less throw. This prevents the necessity of removing andreplacing either the box or case.

Having thus described my invention, what I claim as new, is-

1. The quadrangular slide 01, having shank d thumb-piece 01 and spring61 combined with a case, 0, having groove 0 and cross-bar 0 as and forthe purpose described.

2. The slotted slide E, combined with a clamp-screw, F, placed on thebox A, and with respect to lever B, as and for the purpose specified.

DANIEL GUNDELFINGER. Witnesses:

A. FULKERSON, J. M. JoNEs.

